1. Ecole Normale Supérieure de Mostaganem, Mostaganem, Algeria
2. Faculty of the Exact Sciences, Mustapha Stambouli University of Mascara, Mascara, Algeria
3. Applied Physics Department, Faculty of Science, Tafila Technical University, Tafila, Jordan
4. Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabia